/ Dictionary / Index M Muscovy duck: Meaning and Definition of Find definitions for: Mus'covy duck' Pronunciation: [key] a large, crested, wild duck, Cairina moschata, of tropical America, that has been widely domesticated. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Muscovy muscular Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language